Rising sea levels are slowing Earth’s rotation, lengthening how long an average day lasts. And the current rate of increase to a single average day—1.33 additional milliseconds per century—is ...

A seemingly regular, Sun-like star began acting really weird, flickering haphazardly as its light faded in and out. The cause of the star’s strange behavior may have been a cosmic catastrophe that’s ...

Astronomers have found an exoplanet that could serve as a benchmark in future studies. It's a rocky planet orbiting an M-type star, and though these planets are plentiful, this one could serve as a ...

On March 13, the Dunblane Primary School shooting shocked Scotland and spurred major gun law reforms, alongside other key historical events worldwide.

Two planets crashed into one another in a violent, chaotic collision that astronomers recently witnessed 11,000 light-years ...

Two long-lost episodes from a crucial Doctor Who storyline featuring William Hartnell's First Doctor have miraculously been ...

Over six decades of “Doctor Who,” the intergalactic adventurer’s adversaries have included evil robots, rampaging Yeti — and ...

NASA’s DART mission proved that a spacecraft can nudge an asteroid system in space, offering a real test of planetary defense ...

So, it came as a shock to many people when, in 1781, it was announced that a seventh planet, the first to be discovered since prehistoric times, had been found by the Prussian-born English. Fredrich ...

NASA’s DART images reveal binary asteroids Didymos and Dimorphos exchanging dust and debris, offering new insight into how ...

In 1781, the planet Uranus was discovered by British astronomer William Herschel. In 1868, the Republican-dominated U.S. Senate began impeachment proceedings against U.S. President Andrew Johnson, a ...